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atomic theory
Term | Definition |
---|---|
Democritus Greek philosopher | named atoms |
Thompson, Joseph 1904 | he discovered electrons his model is called "plum pudding" |
Rutherford, Ernest 1911 | he discovered the nucleus gold-foil experiment |
Bohr, Neils 1913 | electrons travel in orbits around the nucleus. "bookshelf model" |
electron cloud | current model of atomic structure electrons are not in orbits but found frequently in certain areas. |